NPPB and cardiac hypertrophy: However, the expression of the markers of cardiac hypertrophy including myosin heavy chain alpha (αMhc, ID: 17888), myosin heavy chain beta (βMhc, ID: 140781), atrial natriuretic peptide (Anp, ID: 230899) and brain natriuretic peptide (Bnp, ID: 18158) were not significantly changed in the hearts of KI mice (Fig. 1F).